?Application: URGENEX 850mah 3.7V Li-Po batteries will fit for MJX Syma Holy Stone Sky Viper RC Quadcopter Drone X56W X400 X400W X300C X400C X800 HS110 HS200 S670 V950hd S1750 V2450(Only if the voltage, dimension and the plug match, then it will fit).
?Parameter: Size: 43.8*24.6*9.6mm/1.7*0.96*0.37inch; Weight:19g/0.67oz; Capacity: 850mAh; Volt: 3.7V.
?Battery Plug: JST Plug. Please noted that you should confirm your boat battery dimension and connector plug is same as this URGENEX batteries.
?More Power: Deliver power when you need it. URGENEX RC battery pack deliver a discharge rate to push your RC boat run time to the peak of its abilities.
?Convenient & Safe: Our high technology enables quick & constant charging at anytime, and no cell memory effect so that you do not need to full discharge before recharging. All of our RC batteries are available use at anytime.